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* A Typed object allows a value to have its type explicitly
* specified.
*
* For example, in Solidity, the value ``45`` could represent a
* ``uint8`` or a ``uint256``. The value ``0x1234`` could represent
* a ``bytes2`` or ``bytes``.
*
* Since JavaScript has no meaningful way to explicitly inform any
* APIs which what the type is, this allows transparent interoperation
* with Soldity.
*
* @_subsection: api/abi:Typed Values
*/
import { assertPrivate, defineProperties } from "../utils/index.js";
import type { Addressable } from "../address/index.js";
import type { BigNumberish, BytesLike } from "../utils/index.js";
import type { Result } from "./coders/abstract-coder.js";
const _gaurd = { };
function n(value: BigNumberish, width: number): Typed {
let signed = false;
if (width < 0) {
signed = true;
width *= -1;
}
// @TODO: Check range is valid for value
return new Typed(_gaurd, `${ signed ? "": "u" }int${ width }`, value, { signed, width });
}
function b(value: BytesLike, size?: number): Typed {
// @TODO: Check range is valid for value
return new Typed(_gaurd, `bytes${ (size) ? size: "" }`, value, { size });
}
// @TODO: Remove this in v7, it was replaced by TypedBigInt
/**
* @_ignore:
*/
export interface TypedNumber extends Typed {
value: number;
defaultValue(): number;
minValue(): number;
maxValue(): number;
}
/**
* A **Typed** that represents a numeric value.
*/
export interface TypedBigInt extends Typed {
/**
* The value.
*/
value: bigint;
/**
* The default value for all numeric types is ``0``.
*/
defaultValue(): bigint;
/**
* The minimum value for this type, accounting for bit-width and signed-ness.
*/
minValue(): bigint;
/**
* The minimum value for this type, accounting for bit-width.
*/
maxValue(): bigint;
}
/**
* A **Typed** that represents a binary sequence of data as bytes.
*/
export interface TypedData extends Typed {
/**
* The value.
*/
value: string;
/**
* The default value for this type.
*/
defaultValue(): string;
}
/**
* A **Typed** that represents a UTF-8 sequence of bytes.
*/
export interface TypedString extends Typed {
/**
* The value.
*/
value: string;
/**
* The default value for the string type is the empty string (i.e. ``""``).
*/
defaultValue(): string;
}
const _typedSymbol = Symbol.for("_ethers_typed");
/**
* The **Typed** class to wrap values providing explicit type information.
*/
export class Typed {
/**
* The type, as a Solidity-compatible type.
*/
readonly type!: string;
/**
* The actual value.
*/
readonly value!: any;
readonly #options: any;
/**
* @_ignore:
*/
readonly _typedSymbol!: Symbol;
/**
* @_ignore:
*/
constructor(gaurd: any, type: string, value: any, options?: any) {
if (options == null) { options = null; }
assertPrivate(_gaurd, gaurd, "Typed");
defineProperties<Typed>(this, { _typedSymbol, type, value });
this.#options = options;
// Check the value is valid
this.format();
}
/**
* Format the type as a Human-Readable type.
*/
format(): string {
if (this.type === "array") {
throw new Error("");
} else if (this.type === "dynamicArray") {
throw new Error("");
} else if (this.type === "tuple") {
return `tuple(${ this.value.map((v: Typed) => v.format()).join(",") })`
}
return this.type;
}
/**
* The default value returned by this type.
*/
defaultValue(): string | number | bigint | Result {
return 0;
}
/**
* The minimum value for numeric types.
*/
minValue(): string | number | bigint {
return 0;
}
/**
* The maximum value for numeric types.
*/
maxValue(): string | number | bigint {
return 0;
}
/**
* Returns ``true`` and provides a type guard is this is a [[TypedBigInt]].
*/
isBigInt(): this is TypedBigInt {
return !!(this.type.match(/^u?int[0-9]+$/));
}
/**
* Returns ``true`` and provides a type guard is this is a [[TypedData]].
*/
isData(): this is TypedData {
return this.type.startsWith("bytes");
}
/**
* Returns ``true`` and provides a type guard is this is a [[TypedString]].
*/
isString(): this is TypedString {
return (this.type === "string");
}
/**
* Returns the tuple name, if this is a tuple. Throws otherwise.
*/
get tupleName(): null | string {
if (this.type !== "tuple") { throw TypeError("not a tuple"); }
return this.#options;
}
// Returns the length of this type as an array
// - `null` indicates the length is unforced, it could be dynamic
// - `-1` indicates the length is dynamic
// - any other value indicates it is a static array and is its length
/**
* Returns the length of the array type or ``-1`` if it is dynamic.
*
* Throws if the type is not an array.
*/
get arrayLength(): null | number {
if (this.type !== "array") { throw TypeError("not an array"); }
if (this.#options === true) { return -1; }
if (this.#options === false) { return (<Array<any>>(this.value)).length; }
return null;
}
/**
* Returns a new **Typed** of %%type%% with the %%value%%.
*/
static from(type: string, value: any): Typed {
return new Typed(_gaurd, type, value);
}
/**
* Return a new ``uint8`` type for %%v%%.
*/
static uint8(v: BigNumberish): Typed { return n(v, 8); }
/**
* Return a new ``uint16`` type for %%v%%.
*/
static uint16(v: BigNumberish): Typed { return n(v, 16); }
/**
* Return a new ``uint24`` type for %%v%%.
*/
static uint24(v: BigNumberish): Typed { return n(v, 24); }
/**
* Return a new ``uint32`` type for %%v%%.
*/
static uint32(v: BigNumberish): Typed { return n(v, 32); }
/**
* Return a new ``uint40`` type for %%v%%.
*/
static uint40(v: BigNumberish): Typed { return n(v, 40); }
/**
* Return a new ``uint48`` type for %%v%%.
*/
static uint48(v: BigNumberish): Typed { return n(v, 48); }
/**
* Return a new ``uint56`` type for %%v%%.
*/
static uint56(v: BigNumberish): Typed { return n(v, 56); }
/**
* Return a new ``uint64`` type for %%v%%.
*/
static uint64(v: BigNumberish): Typed { return n(v, 64); }
/**
* Return a new ``uint72`` type for %%v%%.
*/
static uint72(v: BigNumberish): Typed { return n(v, 72); }
/**
* Return a new ``uint80`` type for %%v%%.
*/
static uint80(v: BigNumberish): Typed { return n(v, 80); }
/**
* Return a new ``uint88`` type for %%v%%.
*/
static uint88(v: BigNumberish): Typed { return n(v, 88); }
/**
* Return a new ``uint96`` type for %%v%%.
*/
static uint96(v: BigNumberish): Typed { return n(v, 96); }
/**
* Return a new ``uint104`` type for %%v%%.
*/
static uint104(v: BigNumberish): Typed { return n(v, 104); }
/**
* Return a new ``uint112`` type for %%v%%.
*/
static uint112(v: BigNumberish): Typed { return n(v, 112); }
/**
* Return a new ``uint120`` type for %%v%%.
*/
static uint120(v: BigNumberish): Typed { return n(v, 120); }
/**
* Return a new ``uint128`` type for %%v%%.
*/
static uint128(v: BigNumberish): Typed { return n(v, 128); }
/**
* Return a new ``uint136`` type for %%v%%.
*/
static uint136(v: BigNumberish): Typed { return n(v, 136); }
/**
* Return a new ``uint144`` type for %%v%%.
*/
static uint144(v: BigNumberish): Typed { return n(v, 144); }
/**
* Return a new ``uint152`` type for %%v%%.
*/
static uint152(v: BigNumberish): Typed { return n(v, 152); }
/**
* Return a new ``uint160`` type for %%v%%.
*/
static uint160(v: BigNumberish): Typed { return n(v, 160); }
/**
* Return a new ``uint168`` type for %%v%%.
*/
static uint168(v: BigNumberish): Typed { return n(v, 168); }
/**
* Return a new ``uint176`` type for %%v%%.
*/
static uint176(v: BigNumberish): Typed { return n(v, 176); }
/**
* Return a new ``uint184`` type for %%v%%.
*/
static uint184(v: BigNumberish): Typed { return n(v, 184); }
/**
* Return a new ``uint192`` type for %%v%%.
*/
static uint192(v: BigNumberish): Typed { return n(v, 192); }
/**
* Return a new ``uint200`` type for %%v%%.
*/
static uint200(v: BigNumberish): Typed { return n(v, 200); }
/**
* Return a new ``uint208`` type for %%v%%.
*/
static uint208(v: BigNumberish): Typed { return n(v, 208); }
/**
* Return a new ``uint216`` type for %%v%%.
*/
static uint216(v: BigNumberish): Typed { return n(v, 216); }
/**
* Return a new ``uint224`` type for %%v%%.
*/
static uint224(v: BigNumberish): Typed { return n(v, 224); }
/**
* Return a new ``uint232`` type for %%v%%.
*/
static uint232(v: BigNumberish): Typed { return n(v, 232); }
/**
* Return a new ``uint240`` type for %%v%%.
*/
static uint240(v: BigNumberish): Typed { return n(v, 240); }
/**
* Return a new ``uint248`` type for %%v%%.
*/
static uint248(v: BigNumberish): Typed { return n(v, 248); }
/**
* Return a new ``uint256`` type for %%v%%.
*/
static uint256(v: BigNumberish): Typed { return n(v, 256); }
/**
* Return a new ``uint256`` type for %%v%%.
*/
static uint(v: BigNumberish): Typed { return n(v, 256); }
/**
* Return a new ``int8`` type for %%v%%.
*/
static int8(v: BigNumberish): Typed { return n(v, -8); }
/**
* Return a new ``int16`` type for %%v%%.
*/
static int16(v: BigNumberish): Typed { return n(v, -16); }
/**
* Return a new ``int24`` type for %%v%%.
*/
static int24(v: BigNumberish): Typed { return n(v, -24); }
/**
* Return a new ``int32`` type for %%v%%.
*/
static int32(v: BigNumberish): Typed { return n(v, -32); }
/**
* Return a new ``int40`` type for %%v%%.
*/
static int40(v: BigNumberish): Typed { return n(v, -40); }
/**
* Return a new ``int48`` type for %%v%%.
*/
static int48(v: BigNumberish): Typed { return n(v, -48); }
/**
* Return a new ``int56`` type for %%v%%.
*/
static int56(v: BigNumberish): Typed { return n(v, -56); }
/**
* Return a new ``int64`` type for %%v%%.
*/
static int64(v: BigNumberish): Typed { return n(v, -64); }
/**
* Return a new ``int72`` type for %%v%%.
*/
static int72(v: BigNumberish): Typed { return n(v, -72); }
/**
* Return a new ``int80`` type for %%v%%.
*/
static int80(v: BigNumberish): Typed { return n(v, -80); }
/**
* Return a new ``int88`` type for %%v%%.
*/
static int88(v: BigNumberish): Typed { return n(v, -88); }
/**
* Return a new ``int96`` type for %%v%%.
*/
static int96(v: BigNumberish): Typed { return n(v, -96); }
/**
* Return a new ``int104`` type for %%v%%.
*/
static int104(v: BigNumberish): Typed { return n(v, -104); }
/**
* Return a new ``int112`` type for %%v%%.
*/
static int112(v: BigNumberish): Typed { return n(v, -112); }
/**
* Return a new ``int120`` type for %%v%%.
*/
static int120(v: BigNumberish): Typed { return n(v, -120); }
/**
* Return a new ``int128`` type for %%v%%.
*/
static int128(v: BigNumberish): Typed { return n(v, -128); }
/**
* Return a new ``int136`` type for %%v%%.
*/
static int136(v: BigNumberish): Typed { return n(v, -136); }
/**
* Return a new ``int144`` type for %%v%%.
*/
static int144(v: BigNumberish): Typed { return n(v, -144); }
/**
* Return a new ``int52`` type for %%v%%.
*/
static int152(v: BigNumberish): Typed { return n(v, -152); }
/**
* Return a new ``int160`` type for %%v%%.
*/
static int160(v: BigNumberish): Typed { return n(v, -160); }
/**
* Return a new ``int168`` type for %%v%%.
*/
static int168(v: BigNumberish): Typed { return n(v, -168); }
/**
* Return a new ``int176`` type for %%v%%.
*/
static int176(v: BigNumberish): Typed { return n(v, -176); }
/**
* Return a new ``int184`` type for %%v%%.
*/
static int184(v: BigNumberish): Typed { return n(v, -184); }
/**
* Return a new ``int92`` type for %%v%%.
*/
static int192(v: BigNumberish): Typed { return n(v, -192); }
/**
* Return a new ``int200`` type for %%v%%.
*/
static int200(v: BigNumberish): Typed { return n(v, -200); }
/**
* Return a new ``int208`` type for %%v%%.
*/
static int208(v: BigNumberish): Typed { return n(v, -208); }
/**
* Return a new ``int216`` type for %%v%%.
*/
static int216(v: BigNumberish): Typed { return n(v, -216); }
/**
* Return a new ``int224`` type for %%v%%.
*/
static int224(v: BigNumberish): Typed { return n(v, -224); }
/**
* Return a new ``int232`` type for %%v%%.
*/
static int232(v: BigNumberish): Typed { return n(v, -232); }
/**
* Return a new ``int240`` type for %%v%%.
*/
static int240(v: BigNumberish): Typed { return n(v, -240); }
/**
* Return a new ``int248`` type for %%v%%.
*/
static int248(v: BigNumberish): Typed { return n(v, -248); }
/**
* Return a new ``int256`` type for %%v%%.
*/
static int256(v: BigNumberish): Typed { return n(v, -256); }
/**
* Return a new ``int256`` type for %%v%%.
*/
static int(v: BigNumberish): Typed { return n(v, -256); }
/**
* Return a new ``bytes1`` type for %%v%%.
*/
static bytes1(v: BytesLike): Typed { return b(v, 1); }
/**
* Return a new ``bytes2`` type for %%v%%.
*/
static bytes2(v: BytesLike): Typed { return b(v, 2); }
/**
* Return a new ``bytes3`` type for %%v%%.
*/
static bytes3(v: BytesLike): Typed { return b(v, 3); }
/**
* Return a new ``bytes4`` type for %%v%%.
*/
static bytes4(v: BytesLike): Typed { return b(v, 4); }
/**
* Return a new ``bytes5`` type for %%v%%.
*/
static bytes5(v: BytesLike): Typed { return b(v, 5); }
/**
* Return a new ``bytes6`` type for %%v%%.
*/
static bytes6(v: BytesLike): Typed { return b(v, 6); }
/**
* Return a new ``bytes7`` type for %%v%%.
*/
static bytes7(v: BytesLike): Typed { return b(v, 7); }
/**
* Return a new ``bytes8`` type for %%v%%.
*/
static bytes8(v: BytesLike): Typed { return b(v, 8); }
/**
* Return a new ``bytes9`` type for %%v%%.
*/
static bytes9(v: BytesLike): Typed { return b(v, 9); }
/**
* Return a new ``bytes10`` type for %%v%%.
*/
static bytes10(v: BytesLike): Typed { return b(v, 10); }
/**
* Return a new ``bytes11`` type for %%v%%.
*/
static bytes11(v: BytesLike): Typed { return b(v, 11); }
/**
* Return a new ``bytes12`` type for %%v%%.
*/
static bytes12(v: BytesLike): Typed { return b(v, 12); }
/**
* Return a new ``bytes13`` type for %%v%%.
*/
static bytes13(v: BytesLike): Typed { return b(v, 13); }
/**
* Return a new ``bytes14`` type for %%v%%.
*/
static bytes14(v: BytesLike): Typed { return b(v, 14); }
/**
* Return a new ``bytes15`` type for %%v%%.
*/
static bytes15(v: BytesLike): Typed { return b(v, 15); }
/**
* Return a new ``bytes16`` type for %%v%%.
*/
static bytes16(v: BytesLike): Typed { return b(v, 16); }
/**
* Return a new ``bytes17`` type for %%v%%.
*/
static bytes17(v: BytesLike): Typed { return b(v, 17); }
/**
* Return a new ``bytes18`` type for %%v%%.
*/
static bytes18(v: BytesLike): Typed { return b(v, 18); }
/**
* Return a new ``bytes19`` type for %%v%%.
*/
static bytes19(v: BytesLike): Typed { return b(v, 19); }
/**
* Return a new ``bytes20`` type for %%v%%.
*/
static bytes20(v: BytesLike): Typed { return b(v, 20); }
/**
* Return a new ``bytes21`` type for %%v%%.
*/
static bytes21(v: BytesLike): Typed { return b(v, 21); }
/**
* Return a new ``bytes22`` type for %%v%%.
*/
static bytes22(v: BytesLike): Typed { return b(v, 22); }
/**
* Return a new ``bytes23`` type for %%v%%.
*/
static bytes23(v: BytesLike): Typed { return b(v, 23); }
/**
* Return a new ``bytes24`` type for %%v%%.
*/
static bytes24(v: BytesLike): Typed { return b(v, 24); }
/**
* Return a new ``bytes25`` type for %%v%%.
*/
static bytes25(v: BytesLike): Typed { return b(v, 25); }
/**
* Return a new ``bytes26`` type for %%v%%.
*/
static bytes26(v: BytesLike): Typed { return b(v, 26); }
/**
* Return a new ``bytes27`` type for %%v%%.
*/
static bytes27(v: BytesLike): Typed { return b(v, 27); }
/**
* Return a new ``bytes28`` type for %%v%%.
*/
static bytes28(v: BytesLike): Typed { return b(v, 28); }
/**
* Return a new ``bytes29`` type for %%v%%.
*/
static bytes29(v: BytesLike): Typed { return b(v, 29); }
/**
* Return a new ``bytes30`` type for %%v%%.
*/
static bytes30(v: BytesLike): Typed { return b(v, 30); }
/**
* Return a new ``bytes31`` type for %%v%%.
*/
static bytes31(v: BytesLike): Typed { return b(v, 31); }
/**
* Return a new ``bytes32`` type for %%v%%.
*/
static bytes32(v: BytesLike): Typed { return b(v, 32); }
/**
* Return a new ``address`` type for %%v%%.
*/
static address(v: string | Addressable): Typed { return new Typed(_gaurd, "address", v); }
/**
* Return a new ``bool`` type for %%v%%.
*/
static bool(v: any): Typed { return new Typed(_gaurd, "bool", !!v); }
/**
* Return a new ``bytes`` type for %%v%%.
*/
static bytes(v: BytesLike): Typed { return new Typed(_gaurd, "bytes", v); }
/**
* Return a new ``string`` type for %%v%%.
*/
static string(v: string): Typed { return new Typed(_gaurd, "string", v); }
/**
* Return a new ``array`` type for %%v%%, allowing %%dynamic%% length.
*/
static array(v: Array<any | Typed>, dynamic?: null | boolean): Typed {
throw new Error("not implemented yet");
return new Typed(_gaurd, "array", v, dynamic);
}
/**
* Return a new ``tuple`` type for %%v%%, with the optional %%name%%.
*/
static tuple(v: Array<any | Typed> | Record<string, any | Typed>, name?: string): Typed {
throw new Error("not implemented yet");
return new Typed(_gaurd, "tuple", v, name);
}
/**
* Return a new ``uint8`` type for %%v%%.
*/
static overrides(v: Record<string, any>): Typed {
return new Typed(_gaurd, "overrides", Object.assign({ }, v));
}
/**
* Returns true only if %%value%% is a [[Typed]] instance.
*/
static isTyped(value: any): value is Typed {
return (value
&& typeof(value) === "object"
&& "_typedSymbol" in value
&& value._typedSymbol === _typedSymbol);
}
/**
* If the value is a [[Typed]] instance, validates the underlying value
* and returns it, otherwise returns value directly.
*
* This is useful for functions that with to accept either a [[Typed]]
* object or values.
*/
static dereference<T>(value: Typed | T, type: string): T {
if (Typed.isTyped(value)) {
if (value.type !== type) {
throw new Error(`invalid type: expecetd ${ type }, got ${ value.type }`);
}
return value.value;
}
return value;
}
}
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